The [[price of crude oil]] more than doubled to $39.50 per barrel over the next 12 months, and long lines once again appeared at [[gas stations]], as they had in the [[1973 oil crisis]].<ref>{{cite web |url=http://www.nacs50.com/decades/70s/ |title=1970s: Education |publisher=National Association of Convenience Stores}}</ref> | The [[price of crude oil]] more than doubled to $39.50 per barrel over the next 12 months, and long lines once again appeared at [[gas stations]], as they had in the [[1973 oil crisis]].<ref>{{cite web |url=http://www.nacs50.com/decades/70s/ |title=1970s: Education |publisher=National Association of Convenience Stores}}</ref> |